Cơ thể là trực thuộc Trung ương vị trí. Phần mở rộng miệng hời hợt nằm trong má và các phần mở rộng pterygoid, pterygomandibular, và thời gian nằm sâu sắc hơn. Mở rộng miệng là phân khúc hời hợt nhất của pad lượng chất béo và truyền đạt sự viên mãn để má. | Buccal Fat Pad The buccal fat pad consists of a main body and four extensions buccal pterygoid pterygomandibular and temporal. The body is centrally positioned. The buccal extension lies superficially within the cheek and the pterygoid pterygomandibular and temporal extensions are more deeply situated. The buccal extension is the most superficial segment of the fat pad and imparts fullness to the cheek. It enters the cheek below the parotid duct and extends along the anterior border of the masseter as it descends into the mandibular retromolar region. It overlies the main portion of the buccinator muscle as it crosses the cheek. In the cheek the fat is anterior to the ramus. Its caudal extension intraorally is on a plane tangential with the occlusal surface of the mandibular third molar Fig. 8-4 . Its anterior limit is marked by the facial vessels which are in the same plane as the buccal 112 fat pad. The parotid duct lies superficial to the fat pad and then penetrates the fat pad and buccinator to enter the oral cavity opposite the second molar. The buccal extension of the fat pad is limited by the masseteric fascia. A deep extension of the masseteric fascia blends with the fascia along the lateral surface of the buccinator. This fascial layer lines the deep surface of the buccal fat that is in contact with the buccinator. TECHNIQUE For demonstration purposes the technique subsequently described is that used to expose the entire surface of the mandible. The length of the incision and the extend of subperiosteal dissection however depend on the area of interest and the extent of surgical intervention. Step 1. Injection of Vasoconstrictor The oral mucosa submucosa and facial muscle are lushly vascularized. Submucosal injection of a vasoconstrictor can dramatically reduce the amount of hemorrhage during incision and dissection. Step 2. Incision In the anterior region from canine to canine the lower lip is everted and a scalpel or electrocautery is used to incise the
